Exhibit 12.1

Ratio of Earnings to Fixed Charges and Preferred Share Dividends

(in thousands of U.S. dollars except ratios)

		Fiscal year ended December 31
		2010			2009			2008			2007			2006
Earnings per Financial Statements	$		3,107,938	$		2,548,929	$		1,197,065	$		2,578,098	$		2,305,169
Add:
Provision for income taxes			559,177			527,627			370,052			575,475			523,267
Fixed charges			251,287			252,782			255,704			198,722			199,811
Earnings for Computation	$		3,918,402	$		3,329,338	$		1,822,821	$		3,352,295	$		3,028,247
Fixed Charges
Interest Expense	$		223,682	$		224,858	$		230,030	$		174,870	$		175,698
One third of payments under operating leases			27,605			27,924			25,674			23,852			24,113
Total Fixed Charges	$		251,287	$		252,782	$		255,704	$		198,722	$		199,811
Ratio of Earnings to Fixed Charges			15.6			13.2			7.1			16.9			15.2
Preferred Share Dividends	$		-	$		-	$		23,921	$		44,851	$		44,851
Total Fixed Charges and
Preferred Share Dividends	$		251,287	$		252,782	$		279,625	$		243,573	$		244,662
Ratio of Earnings to Fixed Charges and
Preferred Share Dividends			15.6			13.2			6.5			13.8			12.4

⁽¹⁾   The Company recognizes accruals for interest and penalties, if any, related to unrecognized tax benefits in income tax expense (i.e. excluded from interest expense).